Mold for making concrete blocks



June is, 1925.

c. w. AKERS Mom) FOR MAKING coucam BLOCKS Filed se ia. 27. 1924 3 Sheets-Sheet 1 INVENTOR Om ns.

WITNESSES ATTORNEYS June 16, 1925. 7 1,542,021

(3. W. AKERS MOLD FOR MAKING CONCRETE BLOCKS Filed Sept. 27, 1924 3 Sheets-Sheet. 2

wrmsss 1 INVENTOR cll flrrers,

' ATTORNEYS C(W. AKERS mono FOR MAKING concurs 131.00g;

Filed s t. 2?;1924 s Sheets-Sheet a INVENTOR amlayzs. h

ATTORNEYS v Patented June 16, 1925.

QHAB'LES W LLI M r-AKEE-S, NAS V LE, E S E -p MOLD non MKKING ooivonnrn BLOCKS.

Application filed September 27, 1924;. Serial No. 740,363.

To all whom z't'mmg concern-r Be it liIlOlVll that IT, "GHAnLns Varanasi Aimee, a citizen of the'United States, and a resident of Nashville, in the aconntiy of Davidson and :State '01? Tennessee, have in vented certain new and useful improvements in Molds at Making Concrete Bilodks, oil which the ii'ollowing? is awspIecification.

This invention relates 'l30AD10lClS2f01 inaliing :c onorete blocl s and lies for its obij'eet the provision of ardeviice which is simple in construction and adjustable for making blocks of di-li erent sizes.

A further object of the inventioniis the provision of a block makingqmacliine having movable side plates for exposing the form block a nd a. locking device for rigidly securing the isidesin position. f

A further object of the invention is :the provision-oi a snoldhavii-ng :a wooden pallet and hinged side members {and a id'iivision plate located icentrail ly between .thc siple a plates whereby several blocks formed in a single mold.

a This invention will be best understood n ay from .a consideration of the following deion, 1H view of the accom panying drawing fEQE-llllfll'fi a gpant of they tailed idescript specification; nearertheless it is to be under-- stood that the inventionis not confined to the disclos ice, being susceptible of" such changes and ,inodifications which shall -de line no material departure from the salient features ofthe invention asnn pressed in the appended claims.

=In the drawings: Figure 1 is aside view of a ,moldaconstructed according ate ,the principles of ,my invention.

Figure-2 is amend iviewiofithesa ne.

Figure is ,a iveirtical transverse section of the device. I

Figure 4 is a plan view a modified form of mold for {forming lhollow blocks.

Figure 5 is a view in perspectiveozf the hine'edend member O f the mold.

Figure 6 is a View in perspective of a core adapted to beappliedto .the mold for making rectangular blocks inorder to-form hollow blocks.

Referring more particularly to the drawings, 1 designates a table supported .by legs 2. The table has a pair of pallets 3 and at extending centrally and longitudinally of said table and spaced from each other to receive a division plate 5. This division plate is secured in position by angle irons 6 that extend vertically between the pallets S :and 41' and terminate in a plane which passes through the upper "edges of the side plates 7 and 'Sof the inold. The angle irons 6 are secured :to transverse brace bars *9 which forna part of the table construction. Each Lei? theside plates .7 and Bare hinged to ain-adjnstah'leplate 10 as shown at r10. The adjustable plates are provided with slots 11 as shown in Figure throiighwhich is insertedza' shol t' '12. The iholts aresecnred in the table 1 and itlie plates are held in their adjnstediposi tion by means oat wing; nuts 13 having a gthre'adeil engagement with the bolts 12. a

Each of the :sidejplates are limited in theirhing'ed increment by means of bars H rigidly connected at their upper ends to the side plates 7 and 8. Asshown in Figure 3 the lQWGJ'l'QDClSfiif the lhars are spaced from the adjusting plates 10 :and are bent outx'va-rdly from the side plates :so that when said side plates are tiltedontwardlyithetree ends of the bars 14. willeqengagelthe adjustment plate and limit the swingingmove ment of the side plates. An end plate has an internal flange 16 bent koutwardly and a straight portion abutting the end of side plate 8 A hinge 18 secured tothe flange 16 connects theiendplate to one end of the side plate 7. A lug: 1.9 is rigidly conneetedwith the portion 17 ofthe end plate and upon \WlllChwlS i-pivotall-y connected the bifui'icated end 29 of an a-rciiatel-y shaped link 21. The other end or" the dink as also bifurcated .as shown at 22 and in which is pivotally connected a cam havingian op erating handle 24:.

U pontheside plate 8 (is mounted a curved lug 25 which is adapted toxhe engaged by the cam 23 when the deter 2 L is "XHOVQCl to the positionshown in i -Figure 4 and is adapted to loclgthe end plate T5 '"to the adjacent ends of the side plat-es I? and 8. 'Ilhe end plate15;is provided with a pair o'fwentically disposed. indentations .26 adapted .to receive the concrete mixture 27 and form V-shaped nibs upon the outer end of the concrete block. The opposite ends :01 the side plates 7 and 8 are closed ,by ineans of an end plate 28 having iii-bent ribs pro jecting into the molds and 7 adapted to form V-shaped grooves 81 in one end of the blocks 27 which are adapted to fit the V-shaped ribs 30 at the opposite ends of alined blocks. The end plate 28 is pivotally connected as shown at 32 to one end of the side plate 7 and is also provided with a lug 19 having an arcuately shaped link 21 carrying at its other end the cam member 23 and an operating arm 24L.

The adjusting plates 10 are slidably mounted on spaced cleats 33, the cleats being secured to the table 1. Angle irons 34 are secured in spaced relation to the side plates 7 and 8 for reinforcing the same, the lower pair of reinforcing angle irons 8% being located adjacent the hinges.

The molding device just described is for the purpose of forming rectangular molds. In order to form concrete blocks of the hollow type I apply cores generally designated by the numeral 36 to the opposite inner faces of the side plates 7 and 8. These cores consist of a piece of sheet metal having a back 37 which is bent around at its ends as shown at 38 and bent inwardly to form attaching flanges 39. These flanges are perforated as are the side plates 7 and 8 and rivets passing through the alined perforations are adapted to secure the flanges 39 and likewise the core 36 to the side plates. Strips of metal 40 cut to conform to the contour of the edges of the plate 37 are secured in any approved manner to the opposite side edges of the plate 37 and prevent the concrete mixture from falling in be tween the side plates 7 and 8 and the bottom 37 of the core 36.

The end plates 15 and 28 are provided. with vertical machined grooves 42 adapted to receive the ends of the division plate 5 for aiding in maintaining the division plate in its proper relation within the mold.

lVhether it is intended to form solid. or hollow blocks the side plates 7 and 8 are placed in position, that is vertically. and the end plates are swung on their hinges 32 until their flanges 17 abut the projecting ends 43 of the reinforcing angle irons 3 1. The links 21 are swung into a position where the cam member 23 will engage the curved lug 25 and the operating arms 2-1 are moved inwardly and the end plates are therefore locked to the side plate 8. The concrete mixture which is of the dry type is packed or tamped in the mold and the smooth straight edges of the side plates 7 and 8 perinit the excess concrete to be readily scraped from the green blocks forming said mold. When the process of forming the block is complete the arms 24 are again swung outwardly, that is towards the links 21 and the cams 23 are released from the curved lugs 25 so that the side plates may move outwardly swinging on the hinges 10 and be limited in their movement by the lower end therein and the adjusting plates 10 moved outwardly after the wing nuts 12 have been released. Due to the different spacing of the side plates 7 and 8 the wider end plates 15 and 28 replace the former end plates. It may be only necessary to remov the pins from the hinges 1S and 32 and shove the section of the leaf of the hinge on the larger end plate into position whence the pins may be returned and complete the hinges.

The blocks which are produced with the use of the cores 36 are formed with grooves at their sides when they are employed in building constructions and properly asso ciated. The adjacent side walls of the blocks form voids. While the blocks in themselves are what we may term solid blocks, yet when properly associated produce in effect a hollow block building construction.

What I claim is:

1. A concrete mold comprising adjusting plates, side plates hingedly connected with the adjusting plates, means for adjustahly spacing the adjustable plates and side plates, end plates hingedly connected to one side plate, and means for releasably locking the opposite ends of the end plates to the other side plate.

2. A concrete mold comprising adjusting plates side plates hingedly connected with the adjusting plates, means for adjustably spacing the adjustable plates and side plates, end plates hingedly connected to one side plate, means for releasably locking the opposite ends of the end plates to the other side plate, and a division plate mounted in a fixed position and located centrally of the side plates.

3. A concrete mold comprising adjust-inc; plates, side plates hingedly connected with the adjusting plates, means for adjustably spacing the adjustable plates and side plates, end plates hingedly connected to one side plate, means forv releasably locking the opposite ends of the end plates to the other side plate, and means for limiting the outward movement of the hinged side plates.

4c. A concrete mold comprising adjustinti' plates. side plates hingedly connected with the adjusting plates, means for adjus'tablv spacing the adjustable plates and side plates, end plates hingedly connected to one side plate, means for releasably locking the opposite ends of the end plates to the other side plate, and cores adapted to be secured to the side plate for forming hollow concrete blocks.

CHARLES TILLIAM AKEES,

IOU 

